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प्रश्न
In addition to speed, what else should we know to predict the position of a moving body ?
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उत्तर
Besides speed, we should know the direction to predict the position of a moving body.
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संबंधित प्रश्न
Bus X travels a distance of 360 km in 5 hours whereas bus Y travels a distance of 476 km in 7 hours. Which
bus travels faster ?
A train travels the first 15 km at a uniform speed of 30 km/h; the next 75 km at a uniform speed of 50 km/h; and the last 10 km at a uniform speed of 20 km/h. Calculate the average speed for the entire train journey.
A car is moving along a straight road at a steady speed. It travels 150 m in 5 seconds:
What is its average speed ?
A car travels 100 km at a speed of 60 km/h and returns with a speed of 40 km/h. Calculate the average speed for the whole journey.
When is a body said to be in motion?
Express 15 m s-1 in km h-1.
A car is moving in a straight line with speed 18 km h-1. It is stopped in 5 s by applying the brakes. Find:
- the speed of car in m s-1
- the retardation and
- the speed of car after 2 s of applying the brakes.
Figure shows the displacement of a body at different times .
Calculate the velocity of the body as it moves for time interval :
(i) 0 to 5 s,
(ii) 5 s to 7 s
(iii) 7 s to 9 s.
The velocity-time graph of a moving body is given below in Figure
The acceleration in parts AB, BC and CD.
Write down the type of motion of a body along with the A – O – B of the following distance – time graph.
